S
M
T
W
T
F
S
26
49°
44°
27
50°
46°
28
52°
48°
29
55°
48°
30
54°
49°
1
52°
49°
2
52°
48°
3
51°
47°
4
50°
46°
5
51°
47°
6
50°
46°
7
51°
45°
8
51°
45°
9
54°
49°
10
57°
50°
11
57°
50°
12
53°
49°
13
52°
50°
14
52°
49°
15
53°
50°
16
53°
48°
17
52°
48°
18
52°
47°
19
53°
47°
20
52°
48°
21
54°
48°
22
57°
50°
23
54°
50°
24
55°
52°
25
57°
52°
26
57°
51°
27
58°
53°
28
57°
53°
29
60°
54°
30
60°
48°
31
56°
51°
1
59°
53°
2
60°
49°
3
59°
53°
4
61°
54°
5
59°
52°
6
61°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boscastle
Boscastle's May 2026 forecast shows daily high temperatures ranging from 49° to 61°, with overnight lows between 44° and 54°. The average high for May is 55° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Boscastle. See also: June | July | August.
